This week it looks like the baby's body is finally trying to catch up with the head, though the head still looks much larger. His chin looks very tiny in comparison to his wide mouth and his eyes have grown much bigger but they are still closed. On the whole his face looks even more human and he has also learnt to suck his thumb.

His eyelashes and brows have grown even longer and he seems to be developing fine downy hair all over his face and body. This is known as 'lanugo' and is supposed to protect him by regulating his body temperature. So your air-conditioner or heater will not affect him. Do not worry, you will not be giving birth to a bear. Most of this hair will disappear before birth and if at all any of it is left, it will fall off gradually.

Though the skin is developing, it is still very thin and transparent so the network of blood vessels running underneath it can easily be identified. This makes your baby look quite red even though he hasn't yet learnt to blush.

But your baby has learnt to breathe. This is apparent from the regular movements of his chest. And his heartbeat is twice that of yours or any other normal adults.
All of a sudden his sex organs have matured enough for a very trained eye to determine the sex. The external genital organs can just about be made out on an ultrasound scan. But, as you know, it is illegal to reveal the sex of the baby.

If you are lucky or really very alert, you might be able to identify movements from this week on as he has begun to move around quite vigorously and is growing quite fast. But as the sac is still able to cushion his punches you are just able to sense a flutter.

Your baby measures six inches or 16cm. by this stage and weighs four and a three-quarter ounces or 135.